^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) // Copyright (c) 2010-2011 EIA Electronics,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // Kurt Van Dijck <kurt.van.dijck@eia.be>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) // Copyright (c) 2010-2011 EIA Electronics,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Pieter Beyens <pieter.beyens@eia.be>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) // Copyright (c) 2017-2019 Pengutronix,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) // Marc Kleine-Budde <kernel@pengutronix.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) // Copyright (c) 2017-2019 Pengutronix,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) // Oleksij Rempel <kernel@pengutronix.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) /* J1939 Address Claiming.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Address Claiming in the kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * - keeps track of the AC states of ECU's,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * - resolves NAME<=>SA taking into account the AC states of ECU's.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * All Address Claim msgs (including host-originated msg) are processed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * at the receive path (a sent msg is always received again via CAN echo).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * As such, the processing of AC msgs is done in the order on which msgs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * are sent on the bus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * This module doesn't send msgs itself (e.g. replies on Address Claims),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * this is the responsibility of a user space application or daemon.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "j1939-priv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static inline name_t j1939_skb_to_name(const struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) return le64_to_cpup((__le64 *)skb->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static inline bool j1939_ac_msg_is_request(struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct j1939_sk_buff_cb *skcb = j1939_skb_to_cb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) int req_pgn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (skb->len < 3 || skcb->addr.pgn != J1939_PGN_REQUEST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) req_pgn = skb->data[0] | (skb->data[1] << 8) | (skb->data[2] << 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return req_pgn == J1939_PGN_ADDRESS_CLAIMED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static int j1939_ac_verify_outgoing(struct j1939_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct j1939_sk_buff_cb *skcb = j1939_skb_to_cb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (skb->len != 8) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) netdev_notice(priv->ndev, "tx address claim with dlc %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (skcb->addr.src_name != j1939_skb_to_name(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) netdev_notice(priv->ndev, "tx address claim with different name\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (skcb->addr.sa == J1939_NO_ADDR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) netdev_notice(priv->ndev, "tx address claim with broadcast sa\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* ac must always be a broadcast */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (skcb->addr.dst_name || skcb->addr.da != J1939_NO_ADDR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) netdev_notice(priv->ndev, "tx address claim with dest, not broadcast\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) int j1939_ac_fixup(struct j1939_priv *priv, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct j1939_sk_buff_cb *skcb = j1939_skb_to_cb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) u8 addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /* network mgmt: address claiming msgs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (skcb->addr.pgn == J1939_PGN_ADDRESS_CLAIMED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct j1939_ecu *ecu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) ret = j1939_ac_verify_outgoing(priv, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /* return both when failure & when successful */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) ecu = j1939_ecu_get_by_name(priv, skcb->addr.src_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (!ecu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (ecu->addr != skcb->addr.sa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /* hold further traffic for ecu, remove from parent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) j1939_ecu_unmap(ecu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) j1939_ecu_put(ecu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) } else if (skcb->addr.src_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /* assign source address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) addr = j1939_name_to_addr(priv, skcb->addr.src_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (!j1939_address_is_unicast(addr) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) !j1939_ac_msg_is_request(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) netdev_notice(priv->ndev, "tx drop: invalid sa for name 0x%016llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) skcb->addr.src_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) skcb->addr.sa = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /* assign destination address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (skcb->addr.dst_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) addr = j1939_name_to_addr(priv, skcb->addr.dst_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (!j1939_address_is_unicast(addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) netdev_notice(priv->ndev, "tx drop: invalid da for name 0x%016llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) skcb->addr.dst_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) skcb->addr.da = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static void j1939_ac_process(struct j1939_priv *priv, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct j1939_sk_buff_cb *skcb = j1939_skb_to_cb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct j1939_ecu *ecu, *prev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) name_t name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (skb->len != 8) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) netdev_notice(priv->ndev, "rx address claim with wrong dlc %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) name = j1939_skb_to_name(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) skcb->addr.src_name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (!name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) netdev_notice(priv->ndev, "rx address claim without name\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (!j1939_address_is_valid(skcb->addr.sa)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) netdev_notice(priv->ndev, "rx address claim with broadcast sa\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) write_lock_bh(&priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) /* Few words on the ECU ref counting:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * First we get an ECU handle, either with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * j1939_ecu_get_by_name_locked() (increments the ref counter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * or j1939_ecu_create_locked() (initializes an ECU object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * with a ref counter of 1).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * j1939_ecu_unmap_locked() will decrement the ref counter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * but only if the ECU was mapped before. So "ecu" still
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * belongs to us.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * j1939_ecu_timer_start() will increment the ref counter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * before it starts the timer, so we can put the ecu when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * leaving this function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) ecu = j1939_ecu_get_by_name_locked(priv, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (!ecu && j1939_address_is_unicast(skcb->addr.sa))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) ecu = j1939_ecu_create_locked(priv, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (IS_ERR_OR_NULL(ecu))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) goto out_unlock_bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) /* cancel pending (previous) address claim */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) j1939_ecu_timer_cancel(ecu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (j1939_address_is_idle(skcb->addr.sa)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) j1939_ecu_unmap_locked(ecu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) goto out_ecu_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /* save new addr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (ecu->addr != skcb->addr.sa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) j1939_ecu_unmap_locked(ecu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) ecu->addr = skcb->addr.sa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) prev = j1939_ecu_get_by_addr_locked(priv, skcb->addr.sa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (prev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if (ecu->name > prev->name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) j1939_ecu_unmap_locked(ecu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) j1939_ecu_put(prev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) goto out_ecu_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /* kick prev if less or equal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) j1939_ecu_unmap_locked(prev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) j1939_ecu_put(prev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) j1939_ecu_timer_start(ecu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) out_ecu_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) j1939_ecu_put(ecu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) out_unlock_bh:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) write_unlock_bh(&priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) void j1939_ac_recv(struct j1939_priv *priv, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct j1939_sk_buff_cb *skcb = j1939_skb_to_cb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct j1939_ecu *ecu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) /* network mgmt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (skcb->addr.pgn == J1939_PGN_ADDRESS_CLAIMED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) j1939_ac_process(priv, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) } else if (j1939_address_is_unicast(skcb->addr.sa)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /* assign source name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) ecu = j1939_ecu_get_by_addr(priv, skcb->addr.sa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (ecu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) skcb->addr.src_name = ecu->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) j1939_ecu_put(ecu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) /* assign destination name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) ecu = j1939_ecu_get_by_addr(priv, skcb->addr.da);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (ecu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) skcb->addr.dst_name = ecu->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) j1939_ecu_put(ecu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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